When interacting with a database, you may receive an error message of "Invalid Database Username or Password. Please update your credential." To update your credential, follow this link or click on your initials and select My Profile. Fill out the Change Database Password form on the right side of the screen. See screenshot below for reference:
Try rerunning your query. If the same error message arises, it is likely that you do not have a credential on the cluster yet. Client Success can set that up for you! Email firstname.lastname@example.org for further assistance.